Simplified lubricating system for jet engines



June 8, 1954 P. A. DE PAD-OVA ET AL 2,680,433

SIMPLIEIED LUBRICATING SYSTEM FOR JET ENGINES IFilecl July 1,8. 1952 JNVENTORS. v Faim/a6 D@ W700i/A Patented June 8, A1954 UNITED STATES T OFFICE SIMPLIFIED LUBRICATIN G SYSTEM FOR JET ENGINES Pasquale A.

De Padova, Newark, and Vincent Condello, Teaneck, N. J., assignors to the United States of America as r retary of the Air Force Application July 18, 1952, Serial No.

2 Claims. (Cl. 12S-196) This invention relates to lubrication systems for jet extended periods of time.

In conventional aircraft engines, in order to l reduce to a minimum the volume of lubricating engine then through A coolant, usually air from the flight stream is scooped and brought in to neutralize the heat absorbed by the lubricating oil, the same oil being circulated over and over.

carried in addition valves, lines and other components.

object in the system hereinafter illustrated by the single iigure of to the top of the oil tank I0. The usual vent 35 and ller cap 37 are provided.

A gear 38 fast on the main drive shaft 40, drives vent 55 and be epresented by the Secother parts as require lubricatio The lubricating mixture, after thus performing the lubricating function, discharges into the space clue to low pressure in space 28 maintained by operatlon of the suction expended. The oil, thus cooled, will be discharged into p 30 and will be drawn by the ponent parts.

The amountl of gasoline evaporated and the pressure within space 28 can be Varied to suit ings through a discharge channel to receive the lubricant mixture therefrom, a suction pump connected with the discharge channel for producing a low pressure therein whereby the gasoline Will separate from the lubricant mixture removing the friction heat therefrom, and means for discharging the lubricant from the sump back to the supply tank.

2. In a jet engine lubricating system, a lubricant supply tank, conduit means connecting said supply tank and the engine bearings, gasoline injector means connected in said conduit means for mixing gasoline with the lubricant therein, first pump means interposed in said conduit means following the gasoline injection for pumping the mixture to the bearings, a sump receiving the mixture from the bearings through a discharge channel, a suction pump connected with said discharge channel for producing a low pressure therein whereby the gasoline will separate from the lubricant removing the friction heat from the lubricant and surrounding parts and a scavenge pump drivingly related with said rst pump means for returning the lubricant from the sump.

References Cited in the file of this patent, UNITED STATES PATENTS 

